Leaf turner



Oct. 23, 1928. 1,689,}06

L. BOYD LEAF" TURNER Filed Nov. 17, 1927 2 Sheets-Sheet 1 Oct. 23, 1928.1,689,106

' L. BOYD LEAF TURNER l Filed Nov. 1'), 19274 z sheets-sheet 2 www.

Patented ct. 23, 1928.

' Louis BOYD, or ooNNELLsvILLE, PENNSYLVANIA.

LEAF TURNER.

u Applicationled November 17, 1927. Serial No. 233,934.

The device forming the'subject matter of this application is a leafturner of that general sort shown in my priorPatent No.1,630,290,1issued May 31, 1927. The device includes a means V,wherebythe. leaves of a book may be turned over, Ato display wall paper oranything else, the construct-ion being such that the book is restored toits original Y pendent position, after allof the leaves have been turnedover, one at a time.

The present `invention aims, especially, to provide novel means formoving the Abook into the path of amechanism which holds the leaves, oneat a time, within the range of a leaf turner. Another object of theinvention is to provide novel means whereby after the last leaf has beenturned, the'binding of the book may be invertedl or turned about anaxis, thereby. to lrestore the book to its original pendent position. Y

It is within the province of the disclosure to improve generally and toenhance the utility of devices of that type to which the inventionappertains.y f

With the above and .other objects in view which will appearas the ceeds,the invention resides in the combina- 4 .tion and arrangement of partsand in the details of construction hereinafter described and claimed, itbeing understood that changes in the precise embodiment of theyinvention herein disclosed may be made within the scopefof what isclaimed, without departing from the spirit of the invention.

In the drawings Figure 1 shows in side elevation, a device constructedin accordance with the invention; c Figure 2 is a front elevation ofthestructure shown-in Figure 1;

Figure 3 is a bottom plan of the base;

Figure l is a view vsimilar to Figure 1 but A showing the partsastheywill appear when C the leaf turner cooperates Vwith the reverser to movethe book forwardly so that the leaves respond readily to the suctionmechanism;

Figure 5 isasectional elevationv showing the parts as they will appearwhen the reverser -and the leaf turner arein ,cooperating rela- `tion torotate the binding of the book with ,50 -respectto a horizontal axis andto restore the 'description prodrive,

book to its original pendent position ;V

Figure 6 is a detail showing one of the sprocket chains;

Figure 7 is a detail showing one of the othv er sprocket chains;

Figure 8 is a sectional view illustrating the brake mechanism andportions of the reversing means;

Figure 9 isa view showing the partsv as they will appear whilst thebinding of the book is being reversed to restore the book to itsoriginal pendent position delineated in Figure 1. f

'in carrying out the invent-ion there is provided a frame 1 including abase 2 and parallel vertical standards mounted on the base 2. The base 2maybe'sustained by a foldable prop 5. vThe standards 43 have off-set p-upper ends 4 connected by a cross rod 6. Idle sprocket wheels 7 arejournaled on the cross rod 6.

A shaft 8 is mounted to turn in the standards 3 and is located .near tothe lower ends of the standards. There are sprocket wheels 9 on theshaft 8. A sprocket chain 10 is engaged with the sprocket Wheels 7-9 Thenumeral 11 marks a leaf turner, in the form of af rod, on which, ifdesired, rollers 114: may be journaled, therollers being adapted to liftthe friction when the turner 11V cooperates with the leaves of a book asherein- 30 after described. By means of nuts` 12, one ,y end of the leafturner 11 is held in a socket 111 on one of the chains 10. v Theopposite end of the leaf turner 11 is engaged in a Ushaped bracket 15 onthe other of the sprocket chains 85 10. Owing to the fact that the leafturner or rod 11 is supported, merely, in the bracket 15, instead ofbeing fastened securely in the bracket, the rod orturner 11 is driven bythe J chain 10, the Lrod or carrier being merely supported in thebracket 15. The object of this one-chain drive is to keep the carrierrod level at all times. If there were a two-chain the carrier rod attimes might. notbe level. The one-chain drive, prevents the chains 1()from being so yoked together by the carrier rod 411 that .the sprocketchains will jump off the sprocket wheelsi'? and 9.

There isa sprocket wheel 16 on` the end of the shaft 8the sprocket wheelv16 cooperat- 100 ing with a sprocket chain 17 engaged witlra sprocketwheel 18 on a` shaft 19 journaled in a bearing 20 on the base 2, theinner end of the sha-ft 19 carrying a sprocket wheel 2l cooperating witha sprocket chain 22 that is engaged with the sprocket wheel 23 on theshaft 24 of a motor 25 of any desired sort,

lpreferably an electric motor. The shaft 24 is Vturning movement by abrake mechanism which will now be described. One end of the tubularshaft 29 engages a fixed abutment 30 on the rod 6, an adjusting collar31 being threaded `at 32l on the opposite ond of the shaft 29. Thecollar 31 engages oneend of a compression spring disposed about the rod6, the opposite end of the spring en- Iragingv an abutment 34 on'the rod6. It will be obvious that the pressure exerted by the spring 33- may bechanged by shifting the collar 31 lengthwise of the shaft 29. The objectin exerting a variable braking pressure on theshaft 29 is to adapt thedevice for use in connection with books of different weights, anobservation which will be understood more readily after the operation ofthe device has been gone into..

Book holders 35, in the form of clamps, are

fsecured to the tubular shaft 29 and include screws 36 adapted to bindupon the butt ends of the leaves of a book 37. The clamps lor bookholdersv35 have laterally extended, outwardly projecting arms 38. Thedevice includes a reverser 39 Vwhich is U-shaped in elevation, as shownin Figure 2. The side Y portions of the reverser 39 are mounted as shownat 40 on the cross rod 6, so that the reverser :can swing on the crossrod. The

upper ends of the side portions of the rerVerser 39 form fingers 41cooperating with the `arms38 on the book holders 35 in a way which willbe described hereinafter. The side portions of the reverser 39 arecurved as at 42 to form cam members.

VSo far as the drive is concerned, it will be understood that the motor25 operates the shaft 24, the shaft driving the suction device 26, andthe member 26 creating a suction on the conduit 27 The shaft 24 of themotor 25 rotates the sprocket wheel 23, and the chain 22, together withthe sprocket wheel 21, rotates the shaft 19; and from the shaft Y19,.motion is transmitted to the shaft 8 by means of the sprocket wheel 18,the sprocket chain 17, andthe sprocket wheel 16. The sprocket wheels 9on lthe shaft 8 actuate the sprocket lchains 10, and the chains 1()carry the leaf turner 1l in an orbit about the book 37.

`,ends of the leaves,

When the leaf turner 11 moves downwardly behind the standards 3, asshown in Figure 4 of the drawings, the leaf turner cooperates with thecam portions 42 of the reverser 39. This causes the reverser to swing tothe right in Figure 4, andthe book 37 is carried to the right, so thatthe foremost leaf of the book is brought into theV field of suction atthe mouth 28'0f the conduit 27. As soon as the leaf turner v11 rides offthe cam at 42, the reverser 39 and all of the book 37 excepting the rstleaf, swings down and back into the position shown in Figurel l, thefirst leaf being held against the mouth 28 of the conduit 27, bysuction. When the leaf turner 11 moves upwardly at the front of thestands ards 3, the leaf turner engages the leaf that is held by suctionagainst the mouth k28 of the conduit 27, and turns that leaf over. Oneleaf after another, thus, is turned over,.as shown at 43 in Figure 9 toform a pendent portion. The lower end of the reverser 39 tends to swingforwardly, but the reverser 39 remains in the position of Figure 1, as

long as there isa single :leaf left, againstr over and back by theaction of the turner 11,-

then the reverser'39 swings by gravity into the position of Figure 5,the lower end of the reverser then being in the path of the leaf turner11, as the leaf turner moves upwardly. The leaf turner 11 now engagesthe lower end of the reverser, and swings'the reverser upwardly,backwardly and downwardly around an axis represented by the rod 6. Whenthe reverser swings as aforesaid, the lingers 41 at the upper end of thereverser' cooperates with the arms 38 of the book clamps, and the bookclamps (35) along with the butt ends of the leaves of the bookv 37, areswung around the cross rod 6 lfrom the position shown in Figure 9 to theposition shown in Figure 1, whereupon the cycle is repeated.

What is claimed is 1. In a device of the class described, a frame, abook holder having an arm, a book including leaves, the butt ends of theleaves being held by the book holder, mechanism for mount-ing the bookholder on the frame for rotation about an axis, a leaf turner, means`for mounting the leaf turner for'movement in an orbit about the book,means for moving the free ends of the leaves, one at a time, into thepath of the turner, whereby the turner will turn the leaves backwardlyand downwardly with respect to said axis, and a reverser mounted toswing on the frame and resting against the last leaf of the book, theturner engaging the reverser to carry the book toward the means formoving the free the reverser swinging into the path of the turner afterthe last leaf has illu been turned, whereby theturner will operate l lthe reverser and cause the reverser to engage the arm, thereby to swingthe holder and the butt ends of the leaves around said axis and torestore the book to its original position.

2. A device of the class described, con- 5 structed as set forth inclaim l, and further characterized by the fact that said mechanismincludes a tubular shaft carrying the holder and journaled on the frame,and means for applying an adjusted braking `pressure to the shaftthereby to limit its rotation and i0 i" to adapt the devicefor use inconnection with books of diiferent Weights.

y Louis BOYD.

